KR101936535B1 - Vehicle control device and control method of vehicle - Google Patents

Vehicle control device and control method of vehicle Download PDF

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Publication number
KR101936535B1
KR101936535B1 KR1020177025762A KR20177025762A KR101936535B1 KR 101936535 B1 KR101936535 B1 KR 101936535B1 KR 1020177025762 A KR1020177025762 A KR 1020177025762A KR 20177025762 A KR20177025762 A KR 20177025762A KR 101936535 B1 KR101936535 B1 KR 101936535B1
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KR
South Korea
Prior art keywords
hydraulic pressure
continuously variable
regenerative braking
variable transmission
motor generator
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KR1020177025762A
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Korean (ko)
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KR20170117518A (en
Inventor
히로키 이와사
히로노리 미야이시
데츠야 이즈미
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쟈트코 가부시키가이샤
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18109—Braking
    • B60W30/18127—Regenerative braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/101—Infinitely variable gearings
    • B60W10/103—Infinitely variable gearings of fluid type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B60L7/14—Dynamic electric regenerative braking for vehicles propelled by ac motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
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    • B60W10/101—Infinitely variable gearings
    • B60W10/107—Infinitely variable gearings with endless flexible members
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • B60W20/14—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion in conjunction with braking regeneration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/14—Inputs being a function of torque or torque demand
    • F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
    • F16H59/22—Idle position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H61/0021—Generation or control of line pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefore
    • F16H61/0028—Supply of control fluid; Pumps therefore using a single pump driven by different power sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • F16H61/66272—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members characterised by means for controlling the torque transmitting capability of the gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/1075—Change speed gearings fluid pressure, e.g. oil pressure
    • B60W2510/108—Change speed gearings fluid pressure, e.g. oil pressure pressure of control fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/10—Accelerator pedal position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/12—Brake pedal position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/02—Clutches
    • B60W2710/021—Clutch engagement state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/083—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/10—Change speed gearings
    • B60W2710/1005—Transmission ratio engaged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/10—Change speed gearings
    • B60W2710/1077—Change speed gearings fluid pressure, e.g. oil pressure
    • B60W2710/1083—Change speed gearings fluid pressure, e.g. oil pressure pressure of control fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • F16H2061/66204—Control for modifying the ratio control characteristic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • F16H2061/66286—Control for optimising pump efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904—Component specially adapted for hev
    • Y10S903/915—Specific drive or transmission adapted for hev
    • Y10S903/917—Specific drive or transmission adapted for hev with transmission for changing gear ratio
    • Y10S903/918—Continuously variable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/93—Conjoint control of different elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/946—Characterized by control of driveline clutch

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Transmission Device (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

모터 제너레이터의 회전이 전달되어 구동하는 오일 펌프와, 오일 펌프로부터 토출되는 오일이 압력 조절되어 발생하는 유압을 무단 변속기에 공급하는 유압 공급부를 구비하는 차량을 제어하는 차량 제어 장치이며, 운전자로부터의 감속 요구에 기초하여 모터 제너레이터에서 회생 제동을 행하는 경우, 유압 공급부는, 회생 제동 중에 무단 변속기에 입력되는 입력 토크를 전달하는 제1 유압과 회생 제동 중에 무단 변속기를 변속시키는 제2 유압에 기초한 유압을 무단 변속기에 공급하고, 회생 제동 중, 제1 유압은, 무단 변속기에 공급 가능한 유압으로부터 제2 유압을 감산한 유압 이하로 설정된다.A vehicle control device for controlling a vehicle having an oil pump driven by rotation of a motor generator and a hydraulic pressure supply part for supplying hydraulic pressure generated by pressure regulation of oil discharged from an oil pump to a continuously variable transmission, In the case of regenerative braking in the motor generator based on the request, the hydraulic pressure supply unit supplies the hydraulic pressure based on the first hydraulic pressure for transmitting the input torque input to the continuously variable transmission during regenerative braking and the second hydraulic pressure for shifting the continuously variable transmission during regenerative braking, And the first hydraulic pressure is set to be equal to or lower than the hydraulic pressure obtained by subtracting the second hydraulic pressure from the hydraulic pressure that can be supplied to the continuously variable transmission.

Description

차량 제어 장치 및 차량의 제어 방법Vehicle control device and control method of vehicle

본 발명은 차량 제어 장치 및 차량의 제어 방법에 관한 것이다.The present invention relates to a vehicle control device and a control method of the vehicle.

엔진의 동력이 벨트를 통해 발전기에 전달되는 차량에 있어서, 발전기의 발전량을 벨트가 슬립하지 않는 범위에서 크게 하는 것이 JP2003-193877A에 개시되어 있다.JP2003-193877A discloses that, in a vehicle in which the power of the engine is transmitted to the generator through the belt, the power generation amount of the generator is increased to such an extent that the belt does not slip.

상기 기술을 사용하여, 모터 제너레이터와 구동륜 사이에 무단 변속기를 설치한 차량에 있어서, 모터 제너레이터에서 발전(이하, 회생 제동이라 함)을 행하고 있는 경우에, 무단 변속기에서 벨트 슬립이 발생하지 않는 범위에서 모터 제너레이터의 회생 제동을 크게 하는 것이 생각된다.In a vehicle provided with a continuously variable transmission between a motor generator and a drive wheel using the above-described technique, in a case where power generation (hereinafter referred to as regenerative braking) is performed in the motor generator, in a range in which belt slip does not occur in the continuously variable transmission It is conceivable to increase the regenerative braking of the motor generator.

이와 같은 차량에 있어서는, 회생 제동 중에 무단 변속기를 변속시키는 경우가 있고, 예를 들어 차량이 감속하고 있는 경우에, 무단 변속기를 다운시프트시키면서 회생 제동을 행하는 경우가 있다. 그때, 회생 제동에 의해 발생하는 회생 제동 토크를 크게 하면, 무단 변속기에 입력되는 입력 토크가 증가한다. 증가하는 입력 토크에 대하여 무단 변속기에서 벨트 슬립이 발생하는 것을 방지하기 위해서는, 무단 변속기에 공급되는 유압(벨트 용량)을 높게 할 필요가 있다. 그 때문에, 오일 펌프로부터 토출되는 오일을 압력 조절하여 발생하는 유압의 대부분이 무단 변속기에서 벨트 슬립을 방지하기 위해 사용되어, 무단 변속기를 다운시프트시키는 유압이 부족하여, 실제 변속비의 목표 변속비에 대한 추종성이 저하되는 변속 불량이 발생할 우려가 있다.In such a vehicle, there is a case where the continuously variable transmission is shifted during regenerative braking. For example, when the vehicle is decelerating, the regenerative braking may be performed while downshifting the continuously variable transmission. At this time, when the regenerative braking torque generated by the regenerative braking is increased, the input torque input to the continuously variable transmission increases. In order to prevent the belt slip from occurring in the continuously variable transmission with respect to the increased input torque, it is necessary to increase the hydraulic pressure (belt capacity) supplied to the continuously variable transmission. Therefore, most of the hydraulic pressure generated by regulating the pressure of the oil discharged from the oil pump is used to prevent the belt slip in the continuously variable transmission, so that the hydraulic pressure to downshift the continuously variable transmission is insufficient, There is a possibility that a defective shifting occurs.

변속 불량이 발생하면, 무단 변속기의 입력축 및 무단 변속기의 입력축에 연결되는 오일 펌프의 회전축의 회전 속도가 차량의 감속과 함께 저하되어, 오일 펌프의 토출량이 저하된다. 그 때문에, 오일 펌프로부터 토출된 오일을 압력 조절함으로써 발생하는 유압이 저하되어, 무단 변속기 등에 필요한 유압을 공급할 수 없게 되는 유량 수지 부족이 발생한다.When the shifting failure occurs, the rotation speed of the rotary shaft of the oil pump connected to the input shaft of the continuously variable transmission and the input shaft of the continuously variable transmission decreases with deceleration of the vehicle, and the amount of discharge of the oil pump decreases. Therefore, the hydraulic pressure generated by regulating the pressure of the oil discharged from the oil pump is lowered, and the flow rate resin shortage that makes it impossible to supply the hydraulic pressure necessary for the continuously variable transmission or the like occurs.

특히, 무단 변속기는, 마찰 체결 요소의 체결, 해방 상태를 전환함으로써 변속을 행하는 유단 변속기와 비교하여, 많은 유압을 필요로 한다. 그 때문에, 상기한 오일 펌프의 회전 속도의 저하에 의해, 유량 수지 부족이 발생하기 쉽다.Particularly, the continuously variable transmission requires a lot of hydraulic pressure as compared with a step-variable transmission that performs shifting by switching the state of engagement and disengagement of the friction engagement elements. Therefore, the flow rate of the oil is likely to be insufficient due to the decrease in the rotational speed of the oil pump.

본 발명은 이와 같은 점을 감안하여 이루어진 것이며, 회생 제동 중에 유량 수지 부족이 발생하는 것을 억제하는 것을 목적으로 한다.SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to suppress generation of a flow rate resin shortage during regenerative braking.

본 발명의 어느 형태에 관한 무단 변속기의 제어 장치는, 모터 제너레이터와 구동륜 사이에 설치한 무단 변속기와, 모터 제너레이터의 회전이 전달되어 구동하는 오일 펌프와, 오일 펌프로부터 토출되는 오일이 압력 조절되어 발생하는 유압을 무단 변속기에 공급하는 유압 공급부를 구비하는 차량을 제어하는 차량 제어 장치이며, 운전자로부터의 감속 요구에 기초하여 모터 제너레이터에서 회생 제동을 행하는 경우, 유압 공급부는, 회생 제동 중에 무단 변속기에 입력되는 입력 토크를 전달하는 제1 유압과 회생 제동 중에 무단 변속기를 변속시키는 제2 유압에 기초한 유압을 무단 변속기에 공급하고, 회생 제동 중, 제1 유압은, 무단 변속기에 공급 가능한 유압으로부터 제2 유압을 감산한 유압 이하로 설정된다.A control apparatus for a continuously variable transmission according to any one of the embodiments of the present invention includes a continuously variable transmission provided between a motor generator and a drive wheel, an oil pump driven and driven by rotation of the motor generator, When the regenerative braking is performed in the motor generator based on a deceleration request from the driver, the hydraulic pressure supply unit is provided with a hydraulic pressure supply unit that inputs the hydraulic pressure to the continuously variable transmission during regenerative braking And the second hydraulic pressure based on the second hydraulic pressure for shifting the continuously variable transmission during regenerative braking is supplied to the continuously variable transmission, and during regenerative braking, the first hydraulic pressure is supplied from the hydraulic pressure supplied to the continuously variable transmission to the second hydraulic pressure Is set to be equal to or less than the hydraulic pressure.

본 발명의 다른 형태에 관한 무단 변속기의 제어 방법은, 모터 제너레이터와 구동륜 사이에 설치한 무단 변속기와, 모터 제너레이터의 회전이 전달되어 구동하는 오일 펌프를 구비하고, 오일 펌프로부터 토출되는 오일이 압력 조절되어 발생하는 유압을 무단 변속기에 공급하는 차량을 제어하는 차량의 제어 방법이며, 운전자로부터의 감속 요구에 기초하여 모터 제너레이터에서 회생 제동을 행하는 경우, 회생 제동 중에 무단 변속기에 입력되는 입력 토크를 전달하는 제1 유압과 회생 제동 중에 무단 변속기를 변속시키는 제2 유압에 기초한 유압을 무단 변속기에 공급하고, 회생 제동 중, 제1 유압은, 무단 변속기에 공급 가능한 유압으로부터 제2 유압을 감산한 유압 이하로 설정된다.A control method of a continuously variable transmission according to another aspect of the present invention is a control method for a continuously variable transmission including a continuously variable transmission provided between a motor generator and a drive wheel and an oil pump driven by rotation of the motor generator, And when the regenerative braking is performed in the motor generator based on a deceleration request from the driver, the input torque transmitted to the continuously variable transmission during regenerative braking is transmitted to the continuously variable transmission The hydraulic pressure based on the second hydraulic pressure for shifting the continuously variable transmission during the first hydraulic pressure and the regenerative braking is supplied to the continuously variable transmission, and during the regenerative braking, the first hydraulic pressure is set to a hydraulic pressure lower than the hydraulic pressure supplied from the hydraulic pressure supplied to the continuously variable transmission Respectively.

이들 형태에 따르면, 회생 제동 중에, 무단 변속기를 변속시키는 제2 유압을 확보함으로써, 무단 변속기의 변속 불량을 억제하고, 오일 펌프의 회전축의 회전 속도가 저하되는 것을 억제하여, 유량 수지 부족이 발생하는 것을 억제할 수 있다.According to these aspects, securing of the second hydraulic pressure for shifting the continuously variable transmission during regenerative braking makes it possible to suppress the shift failure of the continuously variable transmission, suppress the decrease in the rotational speed of the rotary shaft of the oil pump, Can be suppressed.

도 1은 본 실시 형태의 하이브리드 차량의 개략 구성도이다.
도 2는 변속기에 있어서의 변속 맵이다.
도 3은 모터 회전 속도와 회생 제동 토크와 회생 효율의 관계를 나타내는 맵이다.
도 4a는 필요 세컨더리압과 실제 세컨더리압의 관계를 도시하는 도면이다.
도 4b는 필요 세컨더리압과 실제 세컨더리압의 관계를 도시하는 도면이다.
도 4c는 필요 세컨더리압과 실제 세컨더리압의 관계를 도시하는 도면이다.
도 4d는 필요 세컨더리압과 실제 세컨더리압의 관계를 도시하는 도면이다.
도 4e는 필요 세컨더리압과 실제 세컨더리압의 관계를 도시하는 도면이다.
도 5는 회생 제동 토크 규제 제어를 설명하는 흐름도이다.
도 6은 본 실시 형태를 사용한 경우의 필요 세컨더리압과 실제 세컨더리압의 관계를 도시하는 도면이다.
도 7은 회생 제동 토크 규제 제어를 설명하는 타임차트이다.1 is a schematic configuration diagram of a hybrid vehicle according to the present embodiment.
2 is a shift map in the transmission.
3 is a map showing the relationship between the motor rotational speed, regenerative braking torque, and regeneration efficiency.
4A is a diagram showing the relationship between the required secondary pressure and the actual secondary pressure.
4B is a diagram showing the relationship between the required secondary pressure and the actual secondary pressure.
4C is a diagram showing the relationship between the required secondary pressure and the actual secondary pressure.
4D is a diagram showing the relationship between the required secondary pressure and the actual secondary pressure.
4E is a diagram showing the relationship between the required secondary pressure and the actual secondary pressure.
5 is a flowchart for explaining regenerative braking torque restriction control.
6 is a diagram showing the relationship between the required secondary pressure and the actual secondary pressure when the present embodiment is used.
Fig. 7 is a time chart illustrating regenerative braking torque restriction control.

이하에, 본 발명의 실시 형태를 도면을 참조하여 설명한다. 또한, 이하의 설명에 있어서, 변속기의 「변속비」는, 변속기의 입력 회전 속도를 변속기의 출력 회전 속도로 나누어 얻어지는 값이다. 또한, 「최Low 변속비」는 변속기의 변속비가 차량의 발진 시 등에 사용되는 최대 변속비이다. 「최High 변속비」는 변속기의 최소 변속비이다. 변속비가 커지도록 Low측으로 변화되는 것을 다운시프트라 하고, 변속비가 작아지도록 High측으로 변화되는 것을 업시프트라 한다.BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the "gear ratio" of the transmission is a value obtained by dividing the input rotational speed of the transmission by the output rotational speed of the transmission. The " Lowest speed ratio " is the maximum speed ratio at which the speed ratio of the transmission is used when the vehicle is running. The " Highest Shift Ratio " is the minimum shift ratio of the transmission. The upshift is referred to as a downshift and the upshift as a downshift.

도 1은 본 실시 형태의 변속기(4)를 탑재한 하이브리드 차량의 구성을 도시하는 설명도이다.1 is an explanatory view showing a configuration of a hybrid vehicle equipped with the transmission 4 of the present embodiment.

차량은 구동원으로서 엔진(1) 및 모터 제너레이터(2)를 구비한다. 엔진(1) 또는 모터 제너레이터(2)의 출력 회전은, 전후진 전환 기구(3), 변속기(4), 종감속 기구(5)를 통해 구동륜(6)에 전달된다.The vehicle has an engine (1) and a motor generator (2) as drive sources. The output rotation of the engine 1 or the motor generator 2 is transmitted to the drive wheel 6 through the forward / reverse switching mechanism 3, the transmission 4, and the longitudinal speed reduction mechanism 5. [

엔진(1)에는 엔진 제어 액추에이터(10)가 구비된다. 엔진 제어 액추에이터(10)는, 후술하는 엔진 컨트롤 유닛(84)의 지령에 기초하여 엔진(1)을 원하는 토크로 동작시켜, 출력축(11)을 회전시킨다. 엔진(1)과 모터 제너레이터(2) 사이에는, 이들 사이의 회전을 단속하는 제1 클러치(12)가 구비된다.The engine 1 is provided with an engine control actuator 10. The engine control actuator 10 operates the engine 1 at a desired torque and rotates the output shaft 11 based on a command from an engine control unit 84 to be described later. Between the engine 1 and the motor generator 2, there is provided a first clutch 12 for interrupting the rotation therebetween.

모터 제너레이터(2)는 인버터(21)로부터 출력되는 전력에 의해 구동된다. 회생 제동에 의해 얻어진 모터 제너레이터(2)의 회생 전력은, 인버터(21)에 입력된다. 인버터(21)는 후술하는 모터 컨트롤 유닛(83)의 지령에 기초하여 모터 제너레이터(2)를 원하는 토크로 동작시킨다. 모터 제너레이터(2)는 예를 들어 삼상 교류에 의해 구동되는 동기형 회전 전기 기기에 의해 구성된다. 인버터(21)는 배터리(22)에 접속된다.The motor generator 2 is driven by the electric power output from the inverter 21. [ The regenerative electric power of the motor generator 2 obtained by the regenerative braking is input to the inverter 21. [ The inverter 21 operates the motor generator 2 at a desired torque based on a command of a motor control unit 83 to be described later. The motor generator 2 is constituted by, for example, a synchronous rotary electric machine driven by three-phase alternating current. The inverter (21) is connected to the battery (22).

전후진 전환 기구(3)는 엔진(1) 및 모터 제너레이터(2)를 포함하는 구동원과 변속기(4) 사이에 구비된다. 전후진 전환 기구(3)는 출력축(23)으로부터 입력되는 회전을, 정전 방향(전진 주행) 또는 역전 방향(후퇴 주행)으로 전환하여, 변속기(4)에 입력한다. 전후진 전환 기구(3)는 더블 피니언식의 유성 기어 기구(30)와, 전진 클러치(31)와, 후퇴 브레이크(32)를 구비하고, 전진 클러치(31)를 체결한 경우에 정전 방향으로, 후퇴 브레이크(32)가 체결되었을 때 역전 방향으로 전환된다.The forward / reverse switching mechanism 3 is provided between the drive source including the engine 1 and the motor generator 2 and the transmission 4. [ The forward / backward switching mechanism 3 switches the rotation input from the output shaft 23 to the forward direction (forward travel) or the reverse direction (backward travel) and inputs the rotation to the transmission 4. [ The forward / reverse switching mechanism 3 is provided with a double pinion type planetary gear mechanism 30, a forward clutch 31 and a reverse brake 32. When the forward clutch 31 is engaged, When the retraction brake 32 is engaged, the reverse direction is switched.

유성 기어 기구(30)는 구동원의 회전이 입력되는 선 기어와, 링 기어와, 선 기어 및 상기 링 기어와 맞물리는 피니언 기어를 지지하는 캐리어에 의해 구성된다. 전진 클러치(31)는 체결 상태에 의해 선 기어와 캐리어를 일체 회전 가능하게 구성되고, 후퇴 브레이크(32)는 체결 상태에 의해 링 기어의 회전을 정지 가능하게 구성된다.The planetary gear mechanism 30 is constituted by a sun gear to which the rotation of the drive source is input, a ring gear, a carrier which supports the pinion gear meshed with the sun gear and the ring gear. The forward clutch 31 is configured such that the sun gear and the carrier can be integrally rotated by the engaged state, and the reverse brake 32 is configured to be capable of stopping the rotation of the ring gear by the engaged state.

전후진 전환 기구(3)의 전진 클러치(31) 및 후퇴 브레이크(32) 중 한쪽은, 엔진(1) 및 모터 제너레이터(2)와 변속기(4) 사이의 회전을 단속하는 제2 클러치로서 구성된다.One of the forward clutch 31 and the reverse brake 32 of the forward / backward switching mechanism 3 is configured as a second clutch that interrupts rotation between the engine 1 and the motor generator 2 and the transmission 4 .

변속기(4)는 모터 제너레이터(2)와 구동륜(6) 사이에 배치된다. 변속기(4)에는, 후술하는 「HEV 모드」의 경우에는, 엔진(1)에서 발생한 토크가 제1 클러치(12), 모터 제너레이터(2), 전후진 전환 기구(3)를 통해 전달된다. 변속기(4)는 프라이머리 풀리(42)와 세컨더리 풀리(43)에 벨트(44)가 걸쳐져 구성되고, 프라이머리 풀리(42)와 세컨더리 풀리(43)의 홈폭을 각각 변경함으로써 벨트(44)의 권취 직경을 변경하여 변속을 행하는 벨트식 무단 변속 기구(배리에이터)이다.The transmission 4 is disposed between the motor generator 2 and the drive wheel 6. In the " HEV mode " which will be described later, a torque generated in the engine 1 is transmitted to the transmission 4 via the first clutch 12, the motor generator 2, and the forward / reverse switching mechanism 3. The transmission 4 includes a primary pulley 42 and a secondary pulley 43. The primary pulley 42 and the secondary pulley 43 are each provided with a belt 44. The primary pulley 42 and the secondary pulley 43 have their respective groove widths, And is a belt-type continuously variable transmission mechanism (variator) for performing shifting by changing the winding diameter.

프라이머리 풀리(42)는 고정 풀리(42a)와 가동 풀리(42b)를 구비한다. 프라이머리 유압실(45)에 공급되는 프라이머리 유압에 의해 가동 풀리(42b)가 가동됨으로써, 프라이머리 풀리(42)의 홈폭이 변경된다.The primary pulley 42 includes a fixed pulley 42a and a movable pulley 42b. The movable pulley 42b is operated by the primary hydraulic pressure supplied to the primary hydraulic chamber 45, whereby the groove width of the primary pulley 42 is changed.

세컨더리 풀리(43)는 고정 풀리(43a)와 가동 풀리(43b)를 구비한다. 세컨더리 유압실(46)에 공급되는 세컨더리 유압에 의해 가동 풀리(43b)가 가동됨으로써, 세컨더리 풀리(43)의 홈폭이 변경된다.The secondary pulley 43 includes a fixed pulley 43a and a movable pulley 43b. The movable pulley 43b is operated by the secondary hydraulic pressure supplied to the secondary hydraulic chamber 46, so that the groove width of the secondary pulley 43 is changed.

벨트(44)는 프라이머리 풀리(42)의 고정 풀리(42a)와 가동 풀리(42b)에 의해 형성되는 V자 형상을 이루는 시브면과, 세컨더리 풀리(43)의 고정 풀리(43a)와 가동 풀리(43b)에 의해 형성되는 V자 형상을 이루는 시브면에 걸쳐진다.The belt 44 has a V-shaped sheave surface formed by the fixed pulley 42a and the movable pulley 42b of the primary pulley 42 and a sheave surface formed by the fixed pulley 43a of the secondary pulley 43, Shaped sheave surface formed by the second sheave 43b.

종감속 기구(5)는 변속기(4)의 변속기 출력축(41)으로부터의 출력 회전을 구동륜(6)에 전달한다. 종감속 기구(5)는 복수의 기어열(52) 및 차동 기어(56)를 구비한다. 차동 기어(56)에는 차축(51)이 연결되어, 구동륜(6)을 회전한다.The longitudinal speed reduction mechanism 5 transmits the output rotation from the transmission output shaft 41 of the transmission 4 to the drive wheels 6. The longitudinal speed reduction mechanism 5 includes a plurality of gear trains 52 and a differential gear 56. An axle 51 is connected to the differential gear 56 to rotate the drive wheel 6.

구동륜(6)에는 브레이크(61)가 구비된다. 브레이크(61)는 후술하는 브레이크 컨트롤 유닛(82)으로부터의 지령에 기초하여, 브레이크 액추에이터(62)에 의해 제동력이 제어된다. 브레이크 액추에이터(62)는 브레이크 페달(63)의 답력을 검출하는 브레이크 센서(64)의 검출량에 기초하여, 브레이크(61)의 제동력을 제어한다. 운전자에 의해 브레이크 페달(63)이 답입된 경우에는 브레이크 센서(64)로부터의 브레이크 신호 BRK가 ON으로 되고, 답입되지 않은 경우에는 브레이크 신호 BRK가 OFF로 된다. 브레이크 액추에이터(62)는 액압식이어도 되고, 브레이크 센서(64)가 브레이크 페달(63)의 답력에 기초하여 브레이크 액압으로 변환되고, 이 브레이크 액압에 기초하여, 브레이크 액추에이터(62)가 브레이크(61)의 제동력을 제어해도 된다.The drive wheel 6 is provided with a brake 61. The braking force is controlled by the brake actuator 62 based on a command from the brake control unit 82, which will be described later. The brake actuator 62 controls the braking force of the brake 61 based on the detection amount of the brake sensor 64 that detects the steering force of the brake pedal 63. [ When the brake pedal 63 is depressed by the driver, the brake signal BRK from the brake sensor 64 is turned ON, and when the brake pedal 63 is not depressed, the brake signal BRK is OFF. The brake actuator 62 may be of a hydraulic type and the brake sensor 64 is converted into brake hydraulic pressure based on the steering force of the brake pedal 63. Based on this brake hydraulic pressure, The braking force may be controlled.

변속기(4)의 프라이머리 풀리(42) 및 세컨더리 풀리(43)에는, 변속 유압 컨트롤 유닛(7)으로부터의 유압이 공급된다.The hydraulic pressure from the speed change hydraulic control unit 7 is supplied to the primary pulley 42 and the secondary pulley 43 of the transmission 4.

변속 유압 컨트롤 유닛(7)은 오일 펌프(70)로부터 토출되는 오일(윤활유에도 사용됨)에 의해 발생하는 유압을 라인압 PL로 제어하는 레귤레이터 밸브(71)와, 레귤레이터 밸브(71)를 동작시키는 라인압 솔레노이드(72)를 구비한다. 라인압 PL은, 라인압 유로(73)에 의해 제1 압력 조절 밸브(74) 및 제2 압력 조절 밸브(77)에 공급된다. 제1 압력 조절 밸브(74)는 프라이머리 유압 솔레노이드(75)에 의해 동작되어, 프라이머리압 유로(76)에 프라이머리 유압을 공급한다. 제2 압력 조절 밸브(77)는 세컨더리 유압 솔레노이드(78)에 의해 동작되어, 세컨더리압 유로(79)에 세컨더리 유압을 공급한다. 라인압 솔레노이드(72), 프라이머리 유압 솔레노이드(75) 및 세컨더리 유압 솔레노이드(78)는 CVT 컨트롤 유닛(81)으로부터의 지령에 따라서 동작하여, 각 유압을 제어한다. 변속 유압 컨트롤 유닛(7)은 또한, 전후진 전환 기구(3), 변속기(4) 등에 윤활유를 공급한다.The transmission hydraulic control unit 7 includes a regulator valve 71 for controlling the hydraulic pressure generated by oil (also used as lubricating oil) discharged from the oil pump 70 by the line pressure PL, a line for operating the regulator valve 71 And an pressure solenoid (72). The line pressure PL is supplied to the first pressure regulating valve 74 and the second pressure regulating valve 77 by the line pressure passage 73. The first pressure regulating valve 74 is operated by the primary hydraulic solenoid 75 to supply the primary hydraulic pressure to the primary pressure passage 76. The second pressure regulating valve 77 is operated by the secondary hydraulic pressure solenoid 78 to supply the secondary hydraulic pressure to the secondary pressure hydraulic passage 79. The line pressure solenoid 72, the primary hydraulic solenoid 75, and the secondary hydraulic solenoid 78 operate in accordance with commands from the CVT control unit 81 to control the respective hydraulic pressures. The transmission hydraulic control unit 7 also supplies lubricating oil to the forward / reverse switching mechanism 3, the transmission 4, and the like.

오일 펌프(70)는 모터 제너레이터(2)와 전후진 전환 기구(3) 사이의 출력축(23)에 스프로킷이나 체인 등을 통해 연결되어 있고, 출력축(23)의 회전이 전달되어 구동된다.The oil pump 70 is connected to the output shaft 23 between the motor generator 2 and the forward / backward switching mechanism 3 through a sprocket or a chain and is driven by the rotation of the output shaft 23.

CVT 컨트롤 유닛(81)과, 브레이크 컨트롤 유닛(82)과, 모터 컨트롤 유닛(83)과, 엔진 컨트롤 유닛(84)은, 후술하는 하이브리드 컨트롤 모듈(80)과 함께, 서로 통신 가능한 CAN(90)을 통해 접속된다.The CVT control unit 81, the brake control unit 82, the motor control unit 83 and the engine control unit 84 together with the hybrid control module 80, which will be described later, Lt; / RTI >

CVT 컨트롤 유닛(81)은 프라이머리 회전 센서(88), 세컨더리 회전 센서(89) 등으로부터의 신호가 입력되고, 입력된 신호에 기초하여 변속 유압 컨트롤 유닛(7)에 지령을 보낸다. 변속 유압 컨트롤 유닛(7)의 유압은, 변속기(4) 및 전후진 전환 기구(3)에도 공급된다. CVT 컨트롤 유닛(81)은 전후진 전환 기구(3)의 전진 클러치(31) 및 후퇴 브레이크(32)의 체결 상태도 제어한다.The CVT control unit 81 receives signals from the primary rotation sensor 88, the secondary rotation sensor 89, and the like, and sends a command to the shift hydraulic pressure control unit 7 based on the input signals. The hydraulic pressure of the shift hydraulic control unit 7 is also supplied to the transmission 4 and the forward / reverse switching mechanism 3. The CVT control unit 81 also controls the engagement state of the forward clutch 31 and the retraction brake 32 of the forward / reverse switching mechanism 3.

변속기(4)에서는, CVT 컨트롤 유닛(81) 및 변속 유압 컨트롤 유닛(7)에 의해, 도 2에 도시한 변속 맵에 기초하여 변속이 실행된다. 이 변속 맵에서는, 변속기(4)의 동작점이 차속 VSP와 프라이머리 회전 속도 Npri에 의해 정의된다. 변속기(4)의 동작점과 변속 맵 좌측 하부 코너의 0점을 연결하는 선의 기울기가 변속기(4)의 변속비에 대응한다. 변속기(4)는 도 2에 도시한 최Low 변속선과 최High 변속선 사이에서 변속할 수 있다. 이 변속 맵에는, 상세하게는 도시하지 않지만 액셀러레이터 개방도 APO마다 변속선이 설정되어 있고, 변속기(4)의 변속은 액셀러레이터 개방도 APO에 따라서 선택되는 변속선에 따라서 행해진다. 변속 맵에는, 액셀러레이터 페달이 답입되지 않은 경우(액셀러레이터 개방도 APO=0)의 변속선으로서 코스트 변속선이 설정되어 있다. 코스트 변속선은, 액셀러레이터 페달이 답입되지 않은 경우에, 오일 펌프(70)의 회전축의 회전 속도 Nop가, 오일 펌프(70)의 유량 수지의 하한값으로부터 정해지는 하한 회전 속도 Nolim보다도 낮아지지 않도록 설정되어 있다. 즉, 코스트 변속선은, 하한 회전 속도 Nolim에 의해 오일 펌프(70)로부터 토출되는 최소 토출량에 의해 발생하는 라인압 PL에 기초하여 변속기(4) 등에서 필요한 유압을 공급 가능하게 되도록, 즉 유량 수지 부족이 발생하지 않도록 설정되어 있다. 또한, 하한값에 안전율을 가산하여 하한 회전 속도 Nolim을 설정해도 된다. 코스트 변속선은, 차속 VSP가 제1 소정 차속 VSP1 이상인 경우에는 최High 변속선과 일치하고 있고, 차속 VSP가 제1 소정 차속 VSP1보다도 낮은 제2 소정 차속 VSP2 이하인 경우에는 최Low 변속선과 일치하고 있다. 도 2에 있어서는, 코스트 변속선을 파선으로 나타내고, 최Low 변속선 및 최High 변속선과 일치하는 경우에는, 설명을 위해 코스트 변속선을 어긋나게 하여 도시하고 있다.In the transmission 4, the shift is performed by the CVT control unit 81 and the shift hydraulic control unit 7 based on the shift map shown in Fig. In this shift map, the operating point of the transmission 4 is defined by the vehicle speed VSP and the primary rotation speed Npri. The slope of the line connecting the operating point of the transmission 4 and the zero point of the lower left corner of the shift map corresponds to the speed ratio of the transmission 4. [ The transmission 4 can be shifted between the Lowest-speed shift line and the Highest-speed line shown in Fig. In this shift map, although not shown in detail, a shift line is set for each accelerator opening degree APO, and the shifting of the transmission 4 is performed in accordance with the shift line selected in accordance with the accelerator opening APO. In the shift map, a coast change line is set as a speed change line when the accelerator pedal is not depressed (accelerator opening APO = 0). The coast change line is set such that the rotation speed Nop of the rotary shaft of the oil pump 70 is not lower than the lower limit rotation speed Nolim determined from the lower limit value of the flow rate resin of the oil pump 70 when the accelerator pedal is not depressed have. That is, the coast line is set so as to be able to supply the necessary hydraulic pressure in the transmission 4 or the like based on the line pressure PL generated by the minimum discharge amount discharged from the oil pump 70 by the lower limit rotation speed Nolim, Is set so as not to occur. Further, the lower limit rotation speed Nolim may be set by adding the safety factor to the lower limit value. The cost shifting line coincides with the highest shift speed line when the vehicle speed VSP is equal to or higher than the first predetermined vehicle speed VSP1 and coincides with the lowest shift speed line when the vehicle speed VSP is equal to or lower than the second predetermined vehicle speed VSP2 lower than the first predetermined vehicle speed VSP1. In Fig. 2, the coast line is indicated by a broken line, and when the line is coincident with the Lowest speed change line and the Highest speed change line, the coast change line is shifted for the sake of explanation.

하이브리드 컨트롤 모듈(80)은 차량 전체의 소비 에너지를 관리하고, 엔진(1) 및 모터 제너레이터(2)의 구동을 제어하여 에너지 효율이 높아지도록 제어한다.The hybrid control module 80 manages the energy consumption of the entire vehicle and controls the driving of the engine 1 and the motor generator 2 to control the energy efficiency to be high.

하이브리드 컨트롤 모듈(80)에는, 액셀러레이터 개방도 센서(85), 차속 센서(86), 인히비터 스위치 센서(87) 등으로부터의 신호 및 CAN 통신선을 통해 각 컨트롤 유닛으로부터의 정보가 입력된다. 하이브리드 컨트롤 모듈(80)은 이들 신호 및 정보로부터, 목표 구동 토크 Td와 목표 제동 토크 Tb를 산출한다. 하이브리드 컨트롤 모듈(80)은, 운전자에 의해 브레이크 페달(63)이 답입된 경우에, 목표 제동 토크 Tb를 설정하고, 목표 제동 토크 Tb로부터, 모터 제너레이터(2)에서 발생 가능한 최대한의 회생 토크분인 회생 제동 토크 Trg분을 차감한 나머지를 액압 제동 토크 Trq라 하고, 회생 제동 토크 Trg와 액압 제동 토크 Trq의 총합에 의해 목표 제동 토크 Tb를 얻는다. 하이브리드 컨트롤 모듈(80)은 감속 시에 모터 제너레이터(2)에서 목표 제동 토크 Tb를 발생시킴으로써, 전력을 회수한다. 또한, 회생 제동 시에는, 제1 클러치(12)는 해방되어 있다.The hybrid control module 80 receives signals from the accelerator opening degree sensor 85, vehicle speed sensor 86, inhibitor switch sensor 87 and the like and information from each control unit via the CAN communication line. The hybrid control module 80 calculates the target drive torque Td and the target braking torque Tb from these signals and information. The hybrid control module 80 sets the target braking torque Tb when the brake pedal 63 is depressed by the driver and sets the target braking torque Tb as the maximum regenerative torque that can be generated in the motor generator 2 The remainder obtained by subtracting the regenerative braking torque Trg min is referred to as a hydraulic braking torque Trq, and the target braking torque Tb is obtained by summing up the regenerative braking torque Trg and the hydraulic braking torque Trq. The hybrid control module 80 recovers electric power by generating a target braking torque Tb at the motor generator 2 at the time of deceleration. Further, during regenerative braking, the first clutch 12 is disengaged.

브레이크 컨트롤 유닛(82)은 하이브리드 컨트롤 모듈(80)로부터의 제어 지령에 기초하여, 브레이크 액추에이터(62)에 구동 지령을 출력한다. 브레이크 컨트롤 유닛(82)은 브레이크 액추에이터(62)에서 발생한 브레이크 액압의 정보를 취득하여 하이브리드 컨트롤 모듈(80)에 보낸다.The brake control unit 82 outputs a drive command to the brake actuator 62 based on a control command from the hybrid control module 80. [ The brake control unit 82 acquires information on the brake fluid pressure generated in the brake actuator 62 and sends it to the hybrid control module 80.

모터 컨트롤 유닛(83)은 하이브리드 컨트롤 모듈(80)로부터의 제어 지령에 기초하여, 인버터(21)에 대해 목표 역행 지령(정토크 지령) PR 또는 목표 회생 지령(부토크 지령) RG를 출력한다. 모터 컨트롤 유닛(83)은 모터 제너레이터(2)에 인가하는 실제 전류값 등을 검출함으로써, 실제 모터 구동 토크 정보를 취득하고, 하이브리드 컨트롤 모듈(80)에 보낸다.The motor control unit 83 outputs a target retrace command (static torque command) PR or a target regeneration command (sub torque command) RG to the inverter 21 based on a control command from the hybrid control module 80. [ The motor control unit 83 detects the actual current value or the like applied to the motor generator 2 and obtains the actual motor drive torque information and sends it to the hybrid control module 80. [

엔진 컨트롤 유닛(84)은 하이브리드 컨트롤 모듈(80)로부터의 제어 지령에 기초하여, 엔진 제어 액추에이터(10)에 대해 구동 지령을 출력한다. 엔진 컨트롤 유닛(84)은 엔진(1)의 회전 속도 Ne나 연료 분사량 등에 의해 얻어지는 실제 엔진 구동 토크 정보를 하이브리드 컨트롤 모듈(80)에 보낸다.The engine control unit 84 outputs a drive command to the engine control actuator 10 on the basis of a control command from the hybrid control module 80. [ The engine control unit 84 sends the actual engine drive torque information obtained by the rotation speed Ne of the engine 1, the fuel injection amount or the like to the hybrid control module 80. [

하이브리드 컨트롤 모듈(80)은 다음과 같은 모드에 대응한 제어를 실행한다.The hybrid control module 80 executes control corresponding to the following modes.

차량은, 전기 자동차 모드(이하, 「EV 모드」라 함)와, 하이브리드차 모드(이하, 「HEV 모드」라 함)를 운전 모드로서 갖는다.The vehicle has an electric vehicle mode (hereinafter referred to as "EV mode") and a hybrid vehicle mode (hereinafter referred to as "HEV mode") as an operation mode.

「EV 모드」는, 제1 클러치(12)를 해방 상태로 하고, 구동원을 모터 제너레이터(2)만으로 하는 모드이다. 「EV 모드」는, 예를 들어 요구 구동력이 낮고, 배터리 SOC(State of Charge)가 충분히 확보되어 있는 경우에 선택된다.The " EV mode " is a mode in which the first clutch 12 is in the released state and the drive source is the motor generator 2 alone. The " EV mode " is selected, for example, when the demanded driving force is low and the battery SOC (State of Charge) is sufficiently secured.

「HEV 모드」는, 제1 클러치(12)를 체결 상태로 하고, 구동원을 엔진(1)과 모터 제너레이터(2)로 하는 모드이다. 「HEV 모드」는, 예를 들어 요구 구동력이 클 때, 또는, 모터 제너레이터(2)를 구동시키기 위한 배터리 SOC가 부족한 경우에 선택된다.The " HEV mode " is a mode in which the first clutch 12 is engaged and the drive source is the engine 1 and the motor generator 2. The " HEV mode " is selected when, for example, the required driving force is large, or when the battery SOC for driving the motor generator 2 is insufficient.

여기서, 회생 제동 시에 변속기(4)에서 필요한 유압과의 관계에 대하여 설명한다.Here, the relationship with the hydraulic pressure required in the transmission 4 at the time of regenerative braking will be described.

상기한 바와 같이, 감속 시에는 모터 제너레이터(2)에 의해 회생 제동 토크 Trg를 발생시켰지만, 회생 제동 토크 Trg를 발생시키면, 변속기(4)에는 부의 값으로서 회생 제동 토크 Trg에 대응하는 토크가 모터 제너레이터(2)측으로부터 입력된다. 변속기(4)에서는, 회생 제동 토크 Trg에 대응하는 토크를 포함하는 입력 토크 Tin이 입력된 경우라도, 벨트 슬립이 발생하지 않도록 변속기(4)에 공급되는 유압이 제어된다. 그 때문에, 변속기(4)에서 벨트 슬립을 발생시키지 않는 유압(이하, 제1 유압 Psec1이라 함)이 필요해진다. 회생 제동 중에는, 변속기(4)에 부의 토크로 되는 회생 제동 토크 Trg에 대응하는 토크가 입력되므로, 회생 제동을 행하기 전보다도 제1 유압 Psec1은 높아진다.As described above, at the time of deceleration, the regenerative braking torque Trg is generated by the motor generator 2. However, when the regenerative braking torque Trg is generated, the torque corresponding to the regenerative braking torque Trg is transmitted to the transmission 4 as a negative value, (2). In the transmission 4, even when the input torque Tin including the torque corresponding to the regenerative braking torque Trg is inputted, the hydraulic pressure supplied to the transmission 4 is controlled so that the belt slip does not occur. Therefore, a hydraulic pressure (hereinafter referred to as a first hydraulic pressure Psec1) that does not cause belt slippage in the transmission 4 is required. During regenerative braking, since the torque corresponding to the regenerative braking torque Trg, which becomes a negative torque, is input to the transmission 4, the first hydraulic pressure Psec1 becomes higher than before the regenerative braking.

운전자에 의한 액셀러레이터 페달의 답입이 없고, 브레이크 페달(63)이 답입된 경우에는, 변속기(4)에서는 코스트 변속선을 따라서 목표 변속비 it가 설정되고, 실제 변속비 ia가 목표 변속비 it에 추종하여 변화되도록 변속기(4)에 공급되는 유압이 제어되고 있다. 예를 들어, 차속 VSP가 저하되어, 제1 소정 차속 VSP1보다도 낮아지면, 차속 VSP의 저하에 수반하여 실제 변속비 ia를 Low측으로 변경하는 다운시프트가 행해진다. 그 때문에, 실제 변속비 ia가 목표 변속비 it에 추종하여 변화되는 유압이 필요해진다.When there is no depression of the accelerator pedal by the driver and the brake pedal 63 is depressed, the transmission 4 sets the target speed ratio it along the cost change line so that the actual speed ratio ia changes following the target speed ratio it The hydraulic pressure supplied to the transmission 4 is controlled. For example, when the vehicle speed VSP is lowered and becomes lower than the first predetermined vehicle speed VSP1, downshifting is performed to change the actual speed ratio ia to the Low side as the vehicle speed VSP falls. Therefore, the hydraulic pressure in which the actual transmission ratio ia changes in accordance with the target transmission ratio it is required.

또한, 모터 제너레이터(2)에 있어서의 회생에 의해 얻어지는 전력 Pm은, 모터 제너레이터(2)의 회생 제동 토크 Trg(모터 토크 Tm)와, 모터 제너레이터(2)의 회전축의 회전 속도(이하, 모터 회전 속도 Nm이라 함)와, 단위 환산 계수 k의 관계에 있어서, 식 (1)과 같이 나타낼 수 있다.The power Pm obtained by the regeneration of the motor generator 2 is obtained by multiplying the regenerative braking torque Trg (motor torque Tm) of the motor generator 2 by the rotation speed of the rotation shaft of the motor generator 2 Speed Nm) and the unit conversion coefficient k, it can be expressed as Equation (1).

Figure 112017088790790-pct00001
Figure 112017088790790-pct00001

모터 회전 속도 Nm이 증가하면, 모터 제너레이터(2)에서 얻어지는 전력 Pm이 증가하므로, 회생 제동 중에 변속기(4)를 다운시프트하여, 모터 회전 속도 Nm을 높게 하는 것이 생각된다. 그러나, 모터 회전 속도 Nm과 회생 제동 토크 Trg와 모터 제너레이터(2)의 회생 효율(발전 효율) E의 관계는, 도 3의 맵과 같이 되어 있어, 모터 회전 속도 Nm이 높아지면, 어떤 회전 속도를 경계로 모터 제너레이터(2)의 회생 효율 E가 저하된다. 도 3에서는, 동등한 회생 효율 E를 선으로 연결하고 있으며, 화살표의 방향으로 됨에 따라서 모터 제너레이터(2)의 회생 효율 E는 높아진다.When the motor rotation speed Nm increases, the power Pm obtained by the motor generator 2 increases, so that it is conceivable to downshift the transmission 4 during regenerative braking to increase the motor rotation speed Nm. However, the relationship between the motor rotational speed Nm, the regenerative braking torque Trg, and the regenerative efficiency (power generation efficiency) E of the motor generator 2 is as shown in the map of Fig. 3. When the motor rotational speed Nm becomes higher, The regenerative efficiency E of the motor generator 2 is lowered at the boundary. In Fig. 3, the equivalent regenerative efficiency E is connected by a line, and the regenerative efficiency E of the motor generator 2 becomes higher in the direction of the arrow.

그 때문에, 회생 제동 중에는, 모터 제너레이터(2)의 회생 효율 E가 높아지도록, 회생 제동 토크 Trg와 모터 회전 속도 Nm을 설정하고, 변속기(4)를 변속시켜 모터 제너레이터(2)의 회생 효율 E가 높은 모터 회전 속도 Nm으로 하고, 모터 제너레이터(2)의 회생 효율 E가 높은 회생 제동 토크 Trg로 하는 것이 바람직하다. 이 경우, 변속기(4)의 변속비를 모터 제너레이터(2)의 회생 효율 E가 높은 모터 회전 속도 Nm으로 되도록 변속시키는 유압이 필요해진다.Therefore, during regenerative braking, the regenerative braking torque Trg and the motor rotational speed Nm are set so that the regenerative efficiency E of the motor generator 2 is increased, and the regenerative efficiency E of the motor generator 2 It is preferable to set the regenerative braking torque Trg at a high motor rotational speed Nm and the regenerative efficiency E of the motor generator 2 to be high. In this case, a hydraulic pressure is required to shift the speed ratio of the transmission 4 to the motor rotation speed Nm at which the regenerative efficiency E of the motor generator 2 is high.

회생 제동 중에, 모터 제너레이터(2)의 회생 효율 E를 높게 하기 위해 변속기(4)에서 다운시프트하는 경우에는, 목표 변속비 it는 코스트 변속선으로부터 벗어나 Low측에 설정되는 경우가 있다. 이와 같은 경우에는, 변속기(4)에서는, 코스트 변속선을 따라서 다운시프트하기 위해 필요한 유압과, 모터 제너레이터(2)의 회생 효율 E를 높게 하기 위한 변속에 필요한 유압을 가산한 유압(이하, 제2 유압 Psec2라 함)이 필요해진다.In the case of downshifting in the transmission 4 in order to increase the regenerative efficiency E of the motor generator 2 during regenerative braking, the target speed ratio it may be set to the Low side deviating from the cost shifting line. In this case, in the transmission 4, the hydraulic pressure required for downshifting along the coast line is added to the hydraulic pressure required for shifting to increase the regeneration efficiency E of the motor generator 2 Hydraulic pressure Psec2) is required.

따라서, 회생 제동 시에는, 세컨더리압으로서, 변속기(4)에서 벨트 슬립이 발생하지 않는 유압(토크 용량)인 제1 유압 Psec1과, 변속에 필요한 유압인 제2 유압 Psec2의 총합인 필요 세컨더리압 Psecn이 필요해진다.Therefore, at the time of regenerative braking, the required secondary pressure Psecn (sum of the first hydraulic pressure Psec1, which is the hydraulic pressure (torque capacity) at which the belt slip does not occur in the transmission 4 and the second hydraulic pressure Psec2, .

다음에, 필요 세컨더리압 Psecn과 오일 펌프(70)로부터 토출되는 오일에 의해 발생하는 유압을 사용하여 공급되는 실제 세컨더리압(최대 세컨더리압) Pseca의 관계에 대하여 설명한다.Next, the relationship between the required secondary pressure Psecn and the actual secondary pressure (maximum secondary pressure) Pseca supplied using the oil pressure generated by the oil discharged from the oil pump 70 will be described.

감속 요구가 없어, 회생 제동을 행하고 있지 않은 경우에는, 필요 세컨더리압 Psecn은, 도 4a에 도시한 바와 같이 오일 펌프(70)로부터 토출되는 오일에 의해 발생하는 유압을 사용하여 공급되는 실제 세컨더리압 Pseca보다도 낮다. 따라서, 변속기(4)에서는, 벨트 슬립은 발생하지 않고, 또한 목표 변속비 it에 대하여 실제 변속비 ia의 변화가 지연되는 변속 불량은 발생하지 않는다.When there is no deceleration request and no regenerative braking is performed, the required secondary pressure Psecn is set to the actual secondary pressure Pseca supplied using the oil pressure generated by the oil discharged from the oil pump 70 as shown in Fig. . Therefore, in the transmission 4, the belt slip does not occur, and the shift failure in which the change in the actual transmission ratio ia is delayed with respect to the target transmission ratio it does not occur.

운전자에 의해 브레이크 페달(63)이 답입되어 감속 요구가 이루어져, 회생 제동이 개시되면, 회생 제동 토크 Trg가 발생한 만큼, 입력 토크 Tin에 대하여 벨트 슬립을 발생시키지 않기 위해 필요한 유압이 증가하므로, 제1 유압 Psec1이 증가한다. 도 4b 이후에서는, 이 증가분을 우측 아래로 내려가는 해칭으로 나타낸다. 여기에서는, 감속 요구가 작아, 도 4b에 도시한 바와 같이, 필요 세컨더리압 Psecn은, 실제 세컨더리압 Pseca보다도 낮다. 따라서, 변속기(4)에서는, 벨트 슬립은 발생하지 않고, 또한 변속 불량은 발생하지 않는다. 또한, 여기에서는, 모터 제너레이터(2)의 회생 효율 E를 높게 하기 위한 변속은 고려하고 있지 않다.When the brake pedal 63 is depressed by the driver to make a deceleration request and the regenerative braking is started, the hydraulic pressure necessary for not causing the belt slip to the input torque Tin increases as the regenerative braking torque Trg is generated. Hydraulic Psec1 increases. In Fig. 4B and later, this increment is represented by a hatching downward to the right. Here, the deceleration request is small and the required secondary pressure Psecn is lower than the actual secondary pressure Pseca, as shown in Fig. 4B. Therefore, in the transmission 4, the belt slip does not occur and the shift failure does not occur. In this case, a shift for increasing the regenerative efficiency E of the motor generator 2 is not considered.

감속 요구가 커져, 회생 제동 토크 Trg가 커지면 제1 유압 Psec1이 높아져, 도 4c에 도시한 바와 같이 필요 세컨더리압 Psecn이 실제 세컨더리압 Pseca보다도 높아진다. 그러나, 실제 세컨더리압 Pseca를 초과하는 유압을 세컨더리 풀리(43)에는 공급할 수 없으므로, 세컨더리 풀리(43)에서는, 실제 세컨더리압 Pseca를 초과한 유압이 부족하게 된다. 이와 같은 경우에, 목표 변속비 it에 대한 실제 변속비 ia의 추종이 지연되어, 다운시프트에 있어서의 변속 불량이 발생한다.When the deceleration demand becomes large and the regenerative braking torque Trg becomes large, the first hydraulic pressure Psec1 becomes high, and the required secondary pressure Psecn becomes higher than the actual secondary pressure Pseca as shown in Fig. 4C. However, since the hydraulic pressure exceeding the actual secondary pressure Pseca can not be supplied to the secondary pulley 43, the hydraulic pressure exceeding the actual secondary pressure Pseca becomes insufficient in the secondary pulley 43. [ In such a case, the follow-up of the actual transmission ratio ia to the target transmission ratio it is delayed, and a shift failure occurs in the downshift.

세컨더리 풀리(43)에 있어서, 차속 VSP의 저하에 더하여, 다운시프트에 있어서의 변속 불량이 발생하면, 오일 펌프(70)의 회전축의 회전 속도 Nop를 유지할 수 없어, 회전 속도 Nop가 저하되고, 오일 펌프(70)의 토출량이 적어져, 도 4d에 도시한 바와 같이 실제 세컨더리압 Pseca가 낮아진다. 여기에서는, 다운시프트에 있어서의 변속 불량이 발생하고 있기는 하지만, 실제 세컨더리압 Pseca는, 제1 유압 Psec1보다도 높기 때문에, 변속기(4)에 있어서 벨트 슬립은 발생하지 않는다.In the secondary pulley 43, in addition to the lowering of the vehicle speed VSP, if a shift failure occurs in the downshift, the rotation speed Nop of the rotation shaft of the oil pump 70 can not be maintained, The discharge amount of the pump 70 is reduced, and the actual secondary pressure Pseca is lowered as shown in Fig. 4D. Here, although the shifting failure occurs in the downshifting, the actual secondary pressure Pseca is higher than the first hydraulic pressure Psec1, so that the belt slip does not occur in the transmission 4. [

차속 VSP가 더 저하되어, 변속 불량이 진행되면, 오일 펌프(70)의 회전축의 회전 속도 Nop가 더 낮아지고, 오일 펌프(70)의 토출량도 더 적어진다. 그 때문에, 도 4e에 도시한 바와 같이 실제 세컨더리압 Pseca가 더 낮아져, 실제 세컨더리압 Pseca가 제1 유압 Psec1보다도 낮아지면, 변속기(4)에 있어서 벨트 슬립이 발생한다.When the vehicle speed VSP is further lowered and the shift failure progresses, the rotation speed Nop of the rotary shaft of the oil pump 70 becomes lower and the discharge amount of the oil pump 70 becomes smaller. 4E, when the actual secondary pressure Pseca becomes lower and the actual secondary pressure Pseca becomes lower than the first hydraulic pressure Psec1, belt slip occurs in the transmission 4. [

이와 같이, 감속 요구에 따라서 회생 제동을 개시하고, 필요 세컨더리압 Psecn이 실제 세컨더리압 Pseca보다도 높아져, 변속기(4)에서 다운시프트의 변속 불량이 발생하면, 실제 세컨더리압 Pseca의 저하를 초래하고, 그 결과, 변속기(4)에서 벨트 슬립이 발생하는 경우가 있다.As described above, the regenerative braking is started in response to the deceleration request. If the required secondary pressure Psecn becomes higher than the actual secondary pressure Pseca and the transmission 4 incurs the shift failure of the downshift, the actual secondary pressure Pseca is lowered, As a result, a belt slip may occur in the transmission 4.

또한, 도 4a 내지 도 4e를 사용한 설명에서는, 모터 제너레이터(2)의 회생 효율 E를 높게 하기 위해 변속기(4)에서 변속하는 것은 고려하고 있지 않지만, 이것을 고려하면, 변속을 위해 필요한 제2 유압 Psec2가 높아지므로, 상기 문제가 더 발생하기 쉽다.4A to 4E, it is not considered that the transmission 4 is shifted in order to increase the regenerative efficiency E of the motor-generator 2. Considering this, the second hydraulic pressure Psec2 The above problem is more likely to occur.

그래서, 본 실시 형태에서는, 이하에 있어서 설명하는 회생 제동 토크 규제 제어를 행한다. 도 5는 회생 제동 토크 규제 제어를 설명하는 흐름도이다.Thus, in the present embodiment, the regenerative braking torque restriction control described below is performed. 5 is a flowchart for explaining regenerative braking torque restriction control.

스텝 S100에서는, CVT 컨트롤 유닛(81)은 브레이크 페달(63)이 답입되었는지 여부를 판정한다. 브레이크 페달(63)이 답입되어, 브레이크 신호 BRK가 ON으로 되어 있는 경우에는 처리는 스텝 S101로 진행하고, 브레이크 페달(63)이 답입되지 않아, 브레이크 신호 BRK가 OFF로 되어 있는 경우에는 금회의 처리는 종료한다.In step S100, the CVT control unit 81 determines whether or not the brake pedal 63 is depressed. If the brake pedal 63 is depressed and the brake signal BRK is ON, the process proceeds to step S101. If the brake pedal 63 is not depressed and the brake signal BRK is OFF, .

스텝 S101에서는, CVT 컨트롤 유닛(81)은 목표 회생 지령 RG가 출력되었는지 여부를 판정한다. 목표 회생 지령 RG가 출력된 경우에는 처리는 스텝 S102로 진행하고, 목표 회생 지령 RG가 출력되지 않은 경우에는 금회의 처리는 종료한다.In step S101, the CVT control unit 81 determines whether or not the target regeneration command RG is output. If the target regeneration command RG is output, the process proceeds to step S102, and if the target regeneration command RG is not output, the current processing ends.

스텝 S102에서는, CVT 컨트롤 유닛(81)은 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn보다도 낮은지 여부를 판정한다. CVT 컨트롤 유닛(81)은 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn보다도 낮은 경우에는, 세컨더리압이 부족하다고 판정한다. 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn보다도 낮은 경우에는 처리는 스텝 S103으로 진행하고, 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn 이상인 경우에는 금회의 처리는 종료한다.In step S102, the CVT control unit 81 determines whether the actual secondary pressure Pseca is lower than the required secondary pressure Psecn. When the actual secondary pressure Pseca is lower than the required secondary pressure Psecn, the CVT control unit 81 determines that the secondary pressure is insufficient. If the actual secondary pressure Pseca is lower than the required secondary pressure Psecn, the process proceeds to step S103, and if the actual secondary pressure Pseca is equal to or greater than the required secondary pressure Psecn, the current process ends.

스텝 S103에서는, CVT 컨트롤 유닛(81)은 실제 세컨더리압 Pseca가 제1 유압 Psec1에 제1 소정압 P1을 가산한 압보다도 낮은지 여부를 판정한다. 제1 소정압 P1은 미리 설정된 압이며, 제1 유압 Psec1에 제1 소정압 P1을 가산한 압보다도, 실제 세컨더리압 Pseca가 낮아지면, 변속기(4)에서 벨트 슬립이 발생할 가능성이 있다고 판정 가능해지는 압이다. 실제 세컨더리압 Pseca가 제1 유압 Psec1에 제1 소정압 P1을 가산한 압 이상인 경우에는 처리는 스텝 S104로 진행하고, 실제 세컨더리압 Pseca가 제1 유압 Psec1에 제1 소정압 P1을 가산한 압보다도 낮은 경우에는 처리는 스텝 S105로 진행한다.In step S103, the CVT control unit 81 determines whether the actual secondary pressure Pseca is lower than the pressure obtained by adding the first predetermined pressure P1 to the first hydraulic pressure Psec1. When the actual secondary pressure Pseca is lower than the pressure obtained by adding the first predetermined pressure P1 to the first predetermined pressure Psec1, it is determined that there is a possibility that belt slip may occur in the transmission 4 It is pressure. If the actual secondary pressure Pseca is equal to or higher than the pressure obtained by adding the first predetermined pressure P1 to the first hydraulic pressure Psec1, the process proceeds to step S104, where the actual secondary pressure Pseca is set to be higher than the pressure obtained by adding the first predetermined pressure P1 to the first hydraulic pressure Psec1 If it is low, the process proceeds to step S105.

스텝 S104에서는, CVT 컨트롤 유닛(81)은 세컨더리 풀리(43)에 공급 가능한 유압인 실제 세컨더리압 Pseca로부터 변속기(4)를 변속시키기 위해 필요한 제2 유압 Psec2를 감산한 압 이하로 되도록 제1 유압 Psec1을 설정하고, 설정한 제1 유압 Psec1에 의해 벨트 슬립이 발생하지 않도록, 회생 제동 토크 규제값 Trglim을 출력한다. 구체적으로는, CVT 컨트롤 유닛(81)은 필요 세컨더리압 Psecn과 실제 세컨더리압 Pseca의 차압을 산출하고, 차압을 회생 제동 토크 Trg로 환산하여, 회생 제동 토크 규제값 Trglim을 산출한다. 회생 제동 토크 규제값 Trglim은, 차압에 상당하는 회생 제동 토크 Trg의 감소량이다. 회생 제동 토크 규제값 Trglim이 커질수록, 회생 제동 토크 Trg는 작아지고(절댓값이 작아지고), 입력 토크 Tin도 작아진다(절댓값이 작아진다). 즉, 부족한 세컨더리압만큼, 모터 제너레이터(2)에 있어서의 회생 제동 토크 Trg가 저하되고, 이에 수반하여 입력 토크 Tin도 저하된다.In step S104, the CVT control unit 81 sets the first hydraulic pressure Psec1 to be equal to or less than the pressure obtained by subtracting the second hydraulic pressure Psec2 necessary for shifting the transmission 4 from the actual secondary pressure Pseca, which is the hydraulic pressure that can be supplied to the secondary pulley 43 And outputs a regenerative braking torque restriction value Trglim so that belt slip does not occur due to the first hydraulic pressure Psec1 that has been set. Specifically, the CVT control unit 81 calculates the differential pressure between the required secondary pressure Psecn and the actual secondary pressure Pseca, converts the differential pressure into the regenerative braking torque Trg, and calculates the regenerative braking torque regulating value Trglim. The regenerative braking torque regulation value Trglim is a reduction amount of the regenerative braking torque Trg corresponding to the differential pressure. As the regenerative braking torque regulation value Trglim becomes larger, the regenerative braking torque Trg becomes smaller (the absolute value becomes smaller) and the input torque Tin becomes smaller (the absolute value becomes smaller). That is, the regenerative braking torque Trg in the motor generator 2 is lowered by the insufficient secondary pressure, and the input torque Tin is lowered accordingly.

또한, CVT 컨트롤 유닛(81)은 회생 제동 토크 Trg에 규제를 가할 때의 회생 제동 토크 규제값 Trglim의 토크 규제 변화율(단위 시간당의 증가량) Rt를 제1 변화율 R1로 설정한다. 회생 제동 토크 Trg에 규제를 가하여 저하시키면, 그 만큼의 제동 토크는 액압 제동 토크 Trq를 증가시킴으로써 보충된다. 그러나, 회생 제동 토크 Trg의 저하에 대하여 액압 제동 토크 Trq의 증가가 추종하지 못한 경우에는, 일시적으로 제동력이 저하되어, 운전자에게 위화감을 준다. 제1 변화율 R1은, 회생 제동 토크 Trg의 저하에 대하여 액압 제동 토크 Trq의 증가가 지연없이 추종하여, 운전자에게 위화감을 주지 않는 값으로 설정된다. 또한, CVT 컨트롤 유닛(81)은 회생 제동 토크 Trg의 규제를 완화할 때의 회생 제동 토크 규제값 Trglim의 토크 규제 완화 변화율(단위 시간당의 감소량) Rc를 제2 변화율 R2로 설정한다. 제2 변화율 R2는, 회생 제동 토크 Trg의 증가에 대하여 액압 제동 토크 Trq의 저하가 지연없이 추종하여, 운전자에게 위화감을 주지 않는 값으로 설정된다.Further, the CVT control unit 81 sets the torque regulation rate of change (the amount of increase per unit time) Rt of the regenerative braking torque regulation value Trglim when the regenerative braking torque Trg is regulated to the first rate of change R1. When the regenerative braking torque Trg is regulated to be lowered, the corresponding braking torque is supplemented by increasing the hydraulic braking torque Trq. However, when the increase of the hydraulic braking torque Trq does not follow the decrease of the regenerative braking torque Trg, the braking force is temporarily lowered, giving the driver a sense of incongruity. The first rate of change R1 is set to a value that does not cause an unnatural feeling to the driver because the increase in the hydraulic pressure braking torque Trq follows the increase in the regenerative braking torque Trg without delay. Further, the CVT control unit 81 sets the torque deregulation reduction rate (reduction amount per unit time) Rc of the regenerative braking torque regulation value Trglim when the regulation of the regenerative braking torque Trg is relaxed to the second rate of change R 2. The second rate of change R2 is set so that the decrease in the hydraulic pressure braking torque Trq follows the increase in the regenerative braking torque Trg without any delay and gives no discomfort to the driver.

스텝 S105에서는, CVT 컨트롤 유닛(81)은 스텝 S104와 마찬가지로, 제1 유압 Psec1을 설정하고, 회생 제동 토크 규제값 Trglim을 산출한다. 실제 세컨더리압 Pseca가 제1 유압 Psec1에 제1 소정압 P1을 가산한 압보다도 낮은 경우에는 변속기(4)에 있어서 벨트 슬립이 발생할 우려가 있으므로, CVT 컨트롤 유닛(81)은 토크 규제 변화율 Rt를 제1 변화율 R1보다도 큰 제3 변화율 R3으로 설정한다. 구체적으로는 제3 변화율 R3은, 스텝적으로 회생 제동 토크 규제값 Trglim이 변화되도록 설정된다. 또한, CVT 컨트롤 유닛(81)은 토크 규제 완화 변화율 Rc를 스텝 S104와 마찬가지로 제2 변화율 R2로 설정한다.In step S105, as in step S104, the CVT control unit 81 sets the first hydraulic pressure Psec1 and calculates the regenerative braking torque regulation value Trglim. If the actual secondary pressure Pseca is lower than the pressure obtained by adding the first predetermined pressure P1 to the first hydraulic pressure Psec1, there is a possibility that belt slip may occur in the transmission 4. Therefore, the CVT control unit 81 sets the torque regulation change rate Rt Is set to a third change rate R3 that is larger than the first change rate R1. More specifically, the third rate of change R3 is set such that the regenerative braking torque regulation value Trglim is changed stepwise. Further, the CVT control unit 81 sets the torque deregulation change rate Rc at the second rate of change R 2 as in step S 104.

회생 제동 토크 규제값 Trglim, 토크 규제 변화율 Rt 및 토크 규제 완화 변화율 Rc는 하이브리드 컨트롤 모듈(80)에 보내지고, 이들에 기초하여 하이브리드 컨트롤 모듈(80)에 의해 모터 제너레이터(2)의 회생 제동 토크 Trg를 규제하는 제어 지령이 모터 컨트롤 유닛(83)에 출력된다. 회생 제동 토크 규제값 Trglim에 기초하여 회생 제동 토크 Trg가 저하되면, 제1 유압 Psec1이 저하되고, 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn보다도 높아진다. 이와 같이, 회생 제동 토크 Trg가 규제됨으로써 입력 토크 Tin이 저하되므로, 제1 유압 Psec1은, 실제 세컨더리압 Pseca로부터 제2 유압 Psec2를 감산한 압 이하로 된다.The regenerative braking torque regulation value Trglim, the torque regulation change rate Rt and the torque deregulation change rate Rc are sent to the hybrid control module 80. Based on these, the hybrid control module 80 controls the regenerative braking torque Trg Is outputted to the motor control unit (83). When the regenerative braking torque Trg decreases based on the regenerative braking torque regulation value Trglim, the first hydraulic pressure Psec1 is lowered and the actual secondary pressure Pseca becomes higher than the required secondary pressure Psecn. Thus, the regenerative braking torque Trg is regulated so that the input torque Tin is lowered. Therefore, the first hydraulic pressure Psec1 is equal to or lower than the pressure obtained by subtracting the second hydraulic pressure Psec2 from the actual secondary pressure Pseca.

스텝 S106에서는, CVT 컨트롤 유닛(81)은 브레이크 페달(63)이 답입되었는지 여부를 판정한다. 브레이크 페달(63)이 답입되고, 브레이크 신호 BRK가 ON으로 되어 있는 경우에는 처리는 스텝 S107로 진행하고, 브레이크 페달(63)이 답입되지 않은 경우에는 스텝 S109로 진행한다.In step S106, the CVT control unit 81 determines whether or not the brake pedal 63 is depressed. When the brake pedal 63 is depressed and the brake signal BRK is ON, the process proceeds to step S107, and when the brake pedal 63 is not depressed, the process proceeds to step S109.

스텝 S107에서는, CVT 컨트롤 유닛(81)은 목표 회생 지령 RG가 출력되었는지 여부를 판정한다. 목표 회생 지령 RG가 출력된 경우에는 처리는 스텝 S108로 진행하고, 목표 회생 지령 RG가 출력되지 않은 경우에 처리는 스텝 S109로 진행한다.In step S107, the CVT control unit 81 determines whether or not the target regeneration command RG has been output. If the target regeneration command RG is output, the process proceeds to step S108, and if the target regeneration command RG is not output, the process proceeds to step S109.

스텝 S108에서는, CVT 컨트롤 유닛(81)은 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn에 제2 소정압 P2를 가산한 값보다도 높은지 여부를 판정한다. 제2 소정압 P2는 미리 설정된 압이며, 회생 제동 토크 Trg의 규제를 해제해도 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn에 대하여 부족하지 않은 값이다. 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn에 제2 소정압 P2를 가산한 값보다도 높은 경우에는 스텝 S109로 진행하고, 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn에 제2 소정압 P2를 가산한 값 이하인 경우에는 스텝 S103으로 되돌아가, 상기 처리가 반복된다.In step S108, the CVT control unit 81 determines whether the actual secondary pressure Pseca is higher than the value obtained by adding the second predetermined pressure P2 to the required secondary pressure Psecn. The second predetermined pressure P2 is a predetermined pressure, and even if the restriction of the regenerative braking torque Trg is released, the actual secondary pressure Pseca is a value not insufficient for the necessary secondary pressure Psecn. If the actual secondary pressure Pseca is higher than the required secondary pressure Psecn plus the second predetermined pressure P2, the routine proceeds to step S109. If the actual secondary pressure Pseca is equal to or lower than the required secondary pressure Psecn plus the second predetermined pressure P2 , The process returns to step S103, and the above process is repeated.

스텝 S109에서는, CVT 컨트롤 유닛(81)은 회생 제동 토크 Trg의 규제를 해제한다. CVT 컨트롤 유닛(81)은 회생 제동 토크 규제값 Trglim을 제로로 한다.In step S109, the CVT control unit 81 releases regulation of the regenerative braking torque Trg. The CVT control unit 81 sets the regenerative braking torque restriction value Trglim to zero.

또한, 상기 처리의 일부를 CVT 컨트롤 유닛(81) 이외의 컨트롤 유닛에서 행해도 되고, 예를 들어 회생 제동 토크 규제값 Trglim, 토크 규제 변화율 Rt 및 토크 규제 완화 변화율 Rc의 산출을 하이브리드 컨트롤 모듈(80)에서 행해도 된다.For example, calculation of the regenerative braking torque restriction value Trglim, the torque regulation change rate Rt, and the torque regulation reduction change rate Rc may be performed by the hybrid control module 80 ).

이와 같이, 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn보다도 낮은 경우에는, 변속기(4)에 있어서 변속에 필요한 제2 유압 Psec2를 저하시키지 않고, 회생 제동 토크 Trg를 저하시킴(규제함)으로써 변속기(4)의 입력 토크 Tin을 저하시켜, 제1 유압 Psec1을 저하시킨다. 이에 의해, 도 6에 도시한 바와 같이 필요 세컨더리압 Psecn이 실제 세컨더리압 Pseca보다도 높아지는 것을 억제한다. 즉, 변속기(4)에 있어서의 변속(다운시프트)을 우선시켜 변속을 실행하여 변속 불량을 억제하고, 회생 제동 토크 Trg를 규제함으로써, 필요 세컨더리압 Psecn이 실제 세컨더리압 Pseca보다도 높아지는 것을 억제하여, 벨트 슬립의 발생을 억제한다.In this way, when the actual secondary pressure Pseca is lower than the required secondary pressure Psecn, the regenerative braking torque Trg is lowered (regulated) without lowering the second hydraulic pressure Psec2 required for the transmission in the transmission 4, And decreases the first hydraulic pressure Psec1. As a result, the required secondary pressure Psecn is prevented from becoming higher than the actual secondary pressure Pseca as shown in Fig. That is, priority is given to the shift (downshift) in the transmission 4 to perform shifting to suppress the shift failure, and regulating the regenerative braking torque Trg suppresses the required secondary pressure Psecn from being higher than the actual secondary pressure Pseca, Thereby suppressing occurrence of belt slip.

다음에 회생 제동 토크 규제 제어를 행하는 경우에 대하여 도 7의 타임차트를 사용하여 설명한다. 또한, 차량은 차속 VSP가 제1 소정 차속 VSP1보다도 높은 상태에서 주행하고 있다.Next, the case of regenerative braking torque restriction control will be described using the time chart of Fig. Further, the vehicle is traveling in a state where the vehicle speed VSP is higher than the first predetermined vehicle speed VSP1.

시간 t0에 있어서, 액셀러레이터 페달의 답입이 없어져, 액셀러레이터 개방도 APO가 제로로 되고, 차량은 코스트 주행을 행한다. 최종 목표 변속비 if를 나타내는 변속선은, 액셀러레이터 개방도 APO에 따라서 스텝적으로 코스트 변속선(최High 변속선)으로 변경된다. 이에 수반하여, 실제 변속비 ia가 최High 변속비로 되도록 목표 변속비 it가 서서히 변경되고, 실제 변속비 ia가 목표 변속비 it에 추종하여 변화된다. 도 7의 변속비에 있어서는, 최종 목표 변속비 if를 일점쇄선, 목표 변속비 it를 파선 및 실제 변속비 ia를 실선으로 나타낸다.At time t0, the depression of the accelerator pedal disappears, the accelerator opening APO becomes zero, and the vehicle performs the cost travel. The speed change line indicating the final target speed change ratio if is changed stepwise to the cost change line (the highest speed change line) in accordance with the accelerator opening APO. Accordingly, the target speed ratio it is gradually changed so that the actual speed ratio ia becomes the highest speed ratio, and the actual speed ratio ia changes following the target speed ratio it. 7, the final target transmission ratio if is indicated by a one-dot chain line, the target transmission ratio it is represented by a broken line and the actual transmission ratio ia is indicated by a solid line.

목표 프라이머리 회전 속도 Nprif는, 최종 목표 변속비 if에 따라서 스텝적으로 변경되고, 실제 프라이머리 회전 속도 Npria(모터 회전 속도 Nm)는 실제 변속비 ia에 따라서 서서히 저하된다. 도 7의 프라이머리 회전 속도에 있어서, 목표 프라이머리 회전 속도 Nprif를 일점쇄선, 실제 프라이머리 회전 속도 Npria를 실선으로 나타낸다. 또한, 도 7의 프라이머리 회전 속도에 있어서, 목표 변속비 it에 대응하는 프라이머리 회전 속도 Nprit를 설명을 위해 파선으로 나타낸다.The target primary rotational speed Nprif is changed stepwise according to the final target gear ratio if and the actual primary rotational speed Npria (motor rotational speed Nm) gradually decreases in accordance with the actual gear ratio ia. 7, the target primary rotation speed Nprif is indicated by a dashed line and the actual primary rotation speed Npria is indicated by a solid line. 7, the primary rotation speed Nprit corresponding to the target speed ratio it is indicated by a broken line for the purpose of explanation.

실제 프라이머리 회전 속도 Npria의 저하에 수반하여 오일 펌프(70)로부터 토출되는 오일의 유량이 저하되므로, 실제 세컨더리압 Pseca가 저하된다. 또한, 실제 변속비 ia가 최High 변속비로 됨에 따라서 필요 세컨더리압 Psecn도 저하된다. 도 7의 세컨더리압에서는, 필요 세컨더리압 Psecn을 일점쇄선, 제2 유압 Psec2를 이점쇄선, 실제 세컨더리압 Pseca를 실선으로 나타낸다.The actual secondary pressure Pseca is lowered because the flow rate of the oil discharged from the oil pump 70 is lowered as the actual primary rotational speed Npria is lowered. In addition, as the actual speed ratio ia becomes the highest speed ratio, the required secondary pressure Psecn also decreases. 7, the required secondary pressure Psecn is indicated by a one-dot chain line, the second hydraulic pressure Psec2 is indicated by a two-point chain line, and the actual secondary pressure Pseca is indicated by a solid line.

또한, 변속기(4)의 목표 입력 토크 Tint는 부의 값으로 되고, 변속기(4)에의 실제 입력 토크 Tina가 목표 입력 토크 Tint에 따라서 서서히 변경된다. 도 7의 입력 토크에서는, 목표 입력 토크 Tint를 파선, 실제 입력 토크 Tina를 실선으로 나타낸다.Further, the target input torque Tint of the transmission 4 becomes a negative value, and the actual input torque Tina to the transmission 4 is gradually changed in accordance with the target input torque Tint. 7, the target input torque Tint is indicated by a broken line and the actual input torque Tina is indicated by a solid line.

시간 t1에 있어서, 차속 VSP가 제1 소정 차속 VSP1보다도 낮아지고, 또한 브레이크 페달(63)이 답입된다. 이에 의해, 회생 제동 토크 Trg를 발생시키기 위해 목표 제동 토크 Tb가 증가하고, 목표 입력 토크 Tint가 부측으로 커지고(절댓값이 커지고), 목표 입력 토크 Tint에 따라서 실제 입력 토크 Tina가 부측으로 커진다(절댓값이 커진다).At time t1, the vehicle speed VSP becomes lower than the first predetermined vehicle speed VSP1, and the brake pedal 63 is depressed. Thus, in order to generate the regenerative braking torque Trg, the target braking torque Tb increases, the target input torque Tint increases to the negative side (the increase value becomes larger), and the actual input torque Tina increases to the negative side in accordance with the target input torque Tint .

최종 목표 변속비 if는, 코스트 변속선을 따른 다운시프트에 더하여, 모터 제너레이터(2)의 회생 효율 E를 높게 하기 위해 다운시프트하도록 설정되고, 최종 목표 변속비 if에 추종하여 목표 변속비 it가 변경되고, 실제 변속비 ia가 변화된다. 여기에서는, 코스트 변속선을 따른 다운시프트에 필요한 유압에 더하여, 모터 제너레이터(2)의 회생 효율 E를 높게 하기 위한 다운시프트에 필요한 유압이 제2 유압 Psec2에 포함되게 되므로, 제2 유압 Psec2가 스텝적으로 높아진다. 또한, 필요 세컨더리압 Psecn도 스텝적으로 높아진다.The final target speed ratio if is set so as to downshift to increase the regenerative efficiency E of the motor generator 2 in addition to the downshift along the cost shifting line. The target speed ratio it is changed in accordance with the final target speed ratio if, The transmission ratio ia is changed. Here, in addition to the hydraulic pressure required for downshifting along the cost shifting line, the second hydraulic pressure Psec2 is included in the hydraulic pressure Psec2 necessary for downshift to increase the regenerative efficiency E of the motor generator 2, As well. In addition, the required secondary pressure Psecn also increases stepwise.

또한, 실제 변속비 ia가 Low측으로 변화되고, 실제 프라이머리 회전 속도 Npria가 높아지므로, 오일 펌프(70)로부터 토출되는 유량이 많아져, 실제 세컨더리압 Pseca가 높아진다.Further, since the actual speed change ratio ia changes to the Low side and the actual primary rotation speed Npria becomes high, the flow rate discharged from the oil pump 70 becomes large, and the actual secondary pressure Pseca becomes high.

시간 t2에 있어서, 필요 세컨더리압 Psecn이 실제 세컨더리압 Pseca보다도 높아지면, 회생 제동 토크 규제값 Trglim이 설정되어, 회생 제동 토크 Trg가 규제된다. 도 7의 입력 토크에서는, 회생 제동 토크 규제값 Trglim에 상당하는 입력 토크 규제값 Tinlim을 일점쇄선으로 나타낸다. 이와 같이, 회생 제동 토크 Trg가 규제되므로, 변속기(4)의 실제 입력 토크 Tina가 부측으로 작아진다(절댓값이 작아진다). 회생 제동 토크 규제값 Trglim은, 필요 세컨더리압 Psecn과 실제 세컨더리압 Pseca의 차압에 따라서 설정되며, 차압이 커지면 커지고, 실제 입력 토크 Tina는 부측으로 작아진다(절댓값이 작아진다). 여기에서는, 변속에 필요한 제2 유압 Psec2는 확보되어 있으므로, 실제 변속비 ia는 변속 불량을 발생시키지 않고, 목표 변속비 it에 추종하여 변화된다.At time t2, when the required secondary pressure Psecn becomes higher than the actual secondary pressure Pseca, the regenerative braking torque restriction value Trglim is set and the regenerative braking torque Trg is regulated. 7, the input torque regulation value Tinlim corresponding to the regenerative braking torque restriction value Trglim is indicated by a one-dot chain line. Thus, since the regenerative braking torque Trg is regulated, the actual input torque Tina of the transmission 4 becomes smaller (the reduction value becomes smaller). The regenerative braking torque regulation value Trglim is set in accordance with the differential pressure between the required secondary pressure Psecn and the actual secondary pressure Pseca, and becomes larger when the differential pressure becomes larger, and the actual input torque Tina becomes smaller (the absolute value becomes smaller). Here, since the second hydraulic pressure Psec2 necessary for the shift is secured, the actual transmission ratio ia does not cause a shift failure and changes following the target transmission ratio it.

실제 변속비 ia가 Low측으로 변경되고, 실제 프라이머리 회전 속도 Npria가 높아지면, 모터 제너레이터(2)의 회생 효율 E를 높게 하기 위한 다운시프트에 필요한 유압이 적어지므로, 시간 t3에 있어서, 제2 유압 Psec2가 저하되고, 필요 세컨더리압 Psecn의 증가량이 작아진다. 실제 프라이머리 회전 속도 Npria(모터 회전 속도 Nm)가 모터 제너레이터(2)의 회생 효율 E를 높게 하는 회전 속도에 가까워짐에 따라서, 제2 유압 Psec2를 줄일 수 있는 만큼, 제1 유압 Psec1을 높게 할 수 있으므로, 회생 제동 토크 Trg(모터 토크 Tm)를 크게 하여, 회생량을 늘릴 수 있다.When the actual transmission ratio ia is changed to the Low side and the actual primary rotation speed Npria is increased, the hydraulic pressure required for the downshift for increasing the regenerative efficiency E of the motor generator 2 is decreased. Therefore, at time t3, the second hydraulic pressure Psec2 And the amount of increase in the required secondary pressure Psecn is reduced. As the actual primary rotation speed Npria (motor rotation speed Nm) approaches the rotation speed for increasing the regenerative efficiency E of the motor generator 2, the first hydraulic pressure Psec1 can be increased as much as the second hydraulic pressure Psec2 can be reduced Therefore, it is possible to increase the regenerative braking torque Trg (motor torque Tm) and increase the regenerative braking torque Trg (motor torque Tm).

필요 세컨더리압 Psecn과 실제 세컨더리압 Pseca의 차압이 작아지면 회생 제동 토크 규제값 Trglim이 작아져 입력 토크 규제값 Tinlim이 작아지므로, 실제 입력 토크 Tina가 부측으로 커진다(절댓값이 커진다).When the differential pressure between the necessary secondary pressure Psecn and the actual secondary pressure Pseca becomes small, the regenerative braking torque restriction value Trglim becomes small and the input torque regulation value Tinlim becomes small, so that the actual input torque Tina becomes negative (the absolute value becomes large).

시간 t4에 있어서, 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn보다도 높아지고, 시간 t5에 있어서 실제 세컨더리압 Pseca가 필요 세컨더리압 Psecn에 제2 소정압 P2를 가산한 값보다도 높아지면, 회생 제동 토크 Trg의 규제를 해제한다.When the actual secondary pressure Pseca becomes higher than the required secondary pressure Psecn at time t4 and the actual secondary pressure Pseca becomes higher than the value obtained by adding the second predetermined pressure P2 to the required secondary pressure Psecn at time t5, the regulated braking torque Trg Lt; / RTI >

본 발명의 실시 형태의 효과에 대하여 설명한다.Effects of the embodiment of the present invention will be described.

모터 제너레이터(2)에서 회생 제동을 행하는 경우에, 변속기(4)에 입력되는 회생 제동 토크 Trg에 대하여 벨트 슬립을 발생시키지 않는 제1 유압 Psec1을, 실제 세컨더리압 Pseca로부터 변속기(4)를 다운시프트하기 위해 필요한 제2 유압 Psec2를 감산한 유압 이하로 설정한다. 이에 의해, 회생 제동 중에 변속기(4)에서 변속 불량이 발생하는 것을 억제하고, 변속 불량에 의한 오일 펌프(70)의 회전축의 회전 속도 Nop의 저하를 억제하여, 유량 수지 부족을 억제할 수 있다.The first hydraulic pressure Psec1 that does not cause the belt slip to the regenerative braking torque Trg input to the transmission 4 is shifted from the actual secondary pressure Pseca by the downshift And the second hydraulic pressure Psec2 required to make the second hydraulic pressure Psec2 less than the hydraulic pressure. As a result, it is possible to suppress the occurrence of a speed change failure in the transmission 4 during regenerative braking, suppress the decrease in the rotational speed Nop of the rotating shaft of the oil pump 70 due to the defective transmission, and to suppress the flow resin deficiency.

또한, 필요 세컨더리압 Psecn이 실제 세컨더리압 Pseca보다도 높은 경우에, 제1 유압 Psec1을 우선하고, 제2 유압 Psec2를 저하시키는, 즉 변속기(4)의 변속을 지연시키는 것도 생각된다. 그러나, 변속기(4)에서 변속 불량이 발생하면, 오일 펌프(70)의 회전축의 회전 속도 Nop의 저하에 의한 유량 수지 부족이 발생하고, 결과로서 벨트 슬립이 발생한다. 그래서, 본 실시 형태에서는, 제2 유압 Psec2를 우선하여, 변속기(4)에 있어서의 변속 불량을 억제하고 있다.Further, when the required secondary pressure Psecn is higher than the actual secondary pressure Pseca, it is also conceivable to give priority to the first hydraulic pressure Psec1 and to lower the second hydraulic pressure Psec2, that is, to delay the shifting of the transmission 4. [ However, when a transmission failure occurs in the transmission 4, a flow rate resin shortage occurs due to a decrease in the rotational speed Nop of the rotating shaft of the oil pump 70, resulting in belt slip. Thus, in the present embodiment, the second hydraulic pressure Psec2 is prioritized, thereby suppressing the shift failure in the transmission 4.

회생 제동을 행하여, 필요 세컨더리압 Psecn이 실제 세컨더리압 Pseca보다도 높은 경우에, 필요 세컨더리압 Psecn과 실제 세컨더리압 Pseca의 차압에 기초하여 회생 제동 토크 Trg를 저하시킨다. 이에 의해, 변속기(4)의 변속 불량의 발생을 억제하고, 유량 수지 부족을 억제함과 함께, 변속기(4)에 입력되는 실제 입력 토크 Tina를 작게(절댓값을 작게) 하여, 변속기(4)에서 벨트 슬립이 발생하는 것을 억제할 수 있다.The regenerative braking torque Trg is lowered based on the differential pressure between the required secondary pressure Psecn and the actual secondary pressure Pseca when the required secondary pressure Psecn is higher than the actual secondary pressure Pseca. As a result, the occurrence of the defective shifting of the transmission 4 is suppressed, the insufficient flow rate resin is suppressed, and the actual input torque Tina input to the transmission 4 is reduced (reduced value is reduced) Occurrence of belt slip can be suppressed.

코스트 주행 중에, 코스트 변속선을 따라서 실제 변속비 ia가 변경되지 않는 경우에는, 코스트 변속선을 따라서 실제 변속비 ia가 변경되는 경우보다도 실제 프라이머리 회전 속도 Npria가 낮아질 우려가 있다. 코스트 변속선은, 유량 수지 부족이 발생하는 것을 방지하기 위해, 오일 펌프(70)의 회전축의 회전 속도 Nop가 하한 회전 속도 Nolim보다도 낮아지지 않도록 설정되어 있다. 그 때문에, 코스트 변속선을 따라서 실제 변속비 ia가 변경되지 않는 경우에는, 오일 펌프(70)의 회전축의 회전 속도 Nop가 하한 회전 속도 Nolim보다도 낮아져, 유량 수지 부족이 발생하고, 실제 세컨더리압 Pseca가 저하되어, 변속기(4)에서 벨트 슬립이 발생할 우려가 있다.When the actual transmission ratio ia does not change along the cost change line during coasting, the actual primary rotation speed Npria may be lower than when the actual transmission ratio ia is changed along the cost change line. The cost shifting line is set such that the rotation speed Nop of the rotary shaft of the oil pump 70 is not lower than the lower limit rotation speed Nolim in order to prevent the flow rate resin shortage from occurring. Therefore, when the actual transmission ratio ia does not change along the cost change line, the rotation speed Nop of the rotation shaft of the oil pump 70 becomes lower than the lower rotation speed Nolim, resulting in a shortage of the flow rate resin and the actual secondary pressure Pseca decreases There is a possibility that belt slip may occur in the transmission 4. In this case,

본 실시 형태는, 회생 제동 시에 제2 유압 Psec2를, 실제 변속비 ia를 코스트 변속선을 따라서 변속 가능하게 하는 유압을 포함하는 유압으로 설정한다. 이에 의해, 오일 펌프(70)의 회전축의 회전 속도 Nop가 하한 회전 속도 Nolim보다도 낮아지는 것을 억제할 수 있어, 변속기(4)에서 벨트 슬립이 발생하는 것을 억제할 수 있다.In the present embodiment, the second hydraulic pressure Psec2 is set at the time of regenerative braking, and the hydraulic pressure including the hydraulic pressure at which the actual speed change ratio ia is changeable along the speed change line. As a result, the rotation speed Nop of the rotation shaft of the oil pump 70 can be suppressed from being lower than the lower rotation speed Nolim, and occurrence of belt slip in the transmission 4 can be suppressed.

회생 제동 시에, 제2 유압 Psec2를, 모터 제너레이터(2)의 모터 회전 속도 Nm이 모터 제너레이터(2)의 회생 효율 E가 높아지는 회전 속도로 되도록 변속기(4)를 다운시프트시키는 유압을 포함하는 유압으로 설정한다. 이에 의해, 회생 제동 시에 모터 회전 속도 Nm을 모터 제너레이터(2)의 회생 효율 E가 높아지는 회전 속도로 할 수 있어, 모터 제너레이터(2)의 회생 효율 E를 향상시킬 수 있다.The second hydraulic pressure Psec2 is set so that the motor rotational speed Nm of the motor generator 2 becomes equal to the rotational speed at which the regenerative efficiency E of the motor generator 2 becomes higher, . Thereby, the motor rotational speed Nm at the time of regenerative braking can be set at a rotational speed at which the regenerative efficiency E of the motor generator 2 becomes high, and the regenerative efficiency E of the motor generator 2 can be improved.

회생 제동 시에, 제1 클러치(12)가 체결되어 있으면, 모터 제너레이터(2)의 회생 효율 E를 높게 하기 위해 변속기(4)를 다운시프트할 때, 엔진(1)이 동반 회전되어, 엔진(1)이 부하로서 작용하므로, 모터 회전 속도 Nm을 모터 제너레이터(2)의 회생 효율 E가 높아지는 회전 속도까지 높게 할 수 없을 우려가 있다.When the first clutch 12 is engaged during regenerative braking, when the transmission 4 is downshifted to increase the regenerative efficiency E of the motor generator 2, the engine 1 is rotated together with the engine 1 1) acts as the load, there is a possibility that the motor rotational speed Nm can not be increased to the rotational speed at which the regenerative efficiency E of the motor generator 2 becomes high.

본 실시 형태에서는, 제동 회생 시에 제1 클러치(12)를 해방함으로써, 회생 제동 시에 모터 회전 속도 Nm이 모터 제너레이터(2)의 회생 효율 E가 높아지는 회전 속도로 되도록 변속기(4)를 다운시프트할 수 있다.In this embodiment, the first clutch 12 is disengaged during braking regeneration so that the motor 4 is downshifted so that the motor rotational speed Nm becomes a rotational speed at which the regenerative efficiency E of the motor generator 2 becomes high at the time of regenerative braking can do.

이상, 본 발명의 실시 형태에 대하여 설명하였지만, 상기 실시 형태는 본 발명의 적용예의 일부를 나타낸 것에 지나지 않고, 본 발명의 기술적 범위를 상기 실시 형태의 구체적 구성에 한정한다는 취지는 아니다.Although the embodiments of the present invention have been described above, the above embodiments are only illustrative of some of the application examples of the present invention, and the technical scope of the present invention is not limited to the specific configurations of the above embodiments.

상기 실시 형태에서는, 하이브리드 차량을 사용하여 설명하였지만, 전동 차량에 적용해도 된다.Although the hybrid vehicle has been described in the above embodiment, it may be applied to an electric vehicle.

변속기(4)는 벨트식 무단 변속 기구에 한정되지 않고, 체인식 무단 변속 기구여도 된다.The transmission 4 is not limited to the belt-type continuously variable transmission mechanism, and may be a continuously variable transmission mechanism.

본원은 2015년 3월 23일에 일본 특허청에 출원된 특허 출원 제2015-59515호에 기초하는 우선권을 주장하고, 이 출원의 모든 내용은 참조에 의해 본 명세서에 포함된다.The present application claims priority based on Japanese Patent Application No. 2015-59515 filed on March 23, 2015, the entire contents of which are incorporated herein by reference.

Claims (6)

모터 제너레이터와 구동륜 사이에 설치한 무단 변속기와,
상기 모터 제너레이터의 회전이 전달되어 구동하는 오일 펌프와,
상기 오일 펌프로부터 토출되는 오일이 압력 조절되어 발생하는 유압을 상기 무단 변속기에 공급하는 유압 공급 수단을 구비하는 차량을 제어하는 차량 제어 장치이며,
운전자로부터의 감속 요구에 기초하여 상기 모터 제너레이터에서 회생 제동을 행하는 경우, 상기 유압 공급 수단은, 상기 회생 제동 중에 상기 무단 변속기에 입력되는 입력 토크를 전달하는 제1 유압과 상기 회생 제동 중에 상기 무단 변속기를 변속시키는 제2 유압에 기초한 유압을 상기 무단 변속기에 공급하고,
상기 회생 제동 중, 상기 제1 유압은, 상기 무단 변속기에 공급 가능한 유압으로부터 상기 제2 유압을 감산한 유압 이하로 설정되는, 차량 제어 장치.A continuously variable transmission provided between the motor generator and the drive wheel,
An oil pump which is driven by rotation of the motor generator;
And a hydraulic pressure supply means for supplying the hydraulic pressure generated by regulating the pressure of the oil discharged from the oil pump to the continuously variable transmission.
Wherein said hydraulic pressure supply means includes a first hydraulic pressure transmitting an input torque input to said continuously variable transmission during said regenerative braking and a second hydraulic pressure transmitting said input torque during said regenerative braking to said continuously variable transmission during regenerative braking in said motor generator based on a deceleration request from a driver. To the continuously variable transmission, and the hydraulic pressure based on the first hydraulic pressure is supplied to the continuously variable transmission,
Wherein during the regenerative braking, the first hydraulic pressure is set to be equal to or lower than a hydraulic pressure obtained by subtracting the second hydraulic pressure from a hydraulic pressure that can be supplied to the continuously variable transmission. 제1항에 있어서,
상기 회생 제동 시에 상기 모터 제너레이터에서 회생 제동 토크를 발생시켜, 상기 무단 변속기에 입력되는 상기 입력 토크를 제어하는 토크 제어 수단을 구비하고,
상기 토크 제어 수단은, 상기 회생 제동 중, 상기 제1 유압과 상기 제2 유압을 가산한 유압이 상기 무단 변속기에 공급 가능한 유압보다도 높은 경우, 상기 가산한 유압과 상기 무단 변속기에 공급 가능한 유압의 차분에 기초하여 상기 회생 제동 토크를 저하시키는, 차량 제어 장치.The method according to claim 1,
And torque control means for generating a regenerative braking torque at the motor generator during the regenerative braking to control the input torque input to the continuously variable transmission,
Wherein the torque control means controls the torque control means such that when the hydraulic pressure obtained by adding the first hydraulic pressure and the second hydraulic pressure during the regenerative braking is higher than the hydraulic pressure that can be supplied to the continuously variable transmission, a difference between the added hydraulic pressure and the hydraulic pressure that can be supplied to the continuously variable transmission To thereby reduce the regenerative braking torque. 제1항 또는 제2항에 있어서,
상기 제2 유압은, 액셀러레이터 페달이 답입되지 않고 감속 주행하고 있는 경우에 상기 무단 변속기의 변속비를 상기 오일 펌프가 상기 오일 펌프의 최소 토출량보다도 많은 오일을 토출하는 변속비로 변경시키는 유압을 포함하는, 차량 제어 장치.3. The method according to claim 1 or 2,
Wherein the second hydraulic pressure includes a hydraulic pressure that changes the speed ratio of the continuously variable transmission to a speed ratio at which the oil pump discharges the oil with the minimum discharge amount of the oil pump when the accelerator pedal is decelerated without running down. controller. 제1항 또는 제2항에 있어서,
상기 제2 유압은, 액셀러레이터 페달이 답입되지 않고 감속 주행하고 있는 경우에 상기 무단 변속기의 변속비를 상기 모터 제너레이터의 회전축의 회전 속도가 상기 모터 제너레이터에 있어서의 회생 효율을 향상시키는 회전 속도로 되는 변속비로 변경시키는 유압을 포함하는, 차량 제어 장치.3. The method according to claim 1 or 2,
Wherein the second hydraulic pressure is a speed ratio of the continuously variable transmission when the accelerator pedal is decelerating without being depressed by a speed change ratio at which the rotational speed of the rotational shaft of the motor generator becomes a rotational speed for improving the regenerative efficiency of the motor generator And the hydraulic pressure to be changed. 제4항에 있어서,
상기 무단 변속기는, 엔진으로부터, 마찰 체결 요소 및 상기 모터 제너레이터를 통해 토크를 전달 가능하고,
상기 회생 제동 중에는 상기 마찰 체결 요소가 해방되는, 차량 제어 장치.5. The method of claim 4,
Wherein the continuously variable transmission is capable of transmitting torque from the engine through the friction engagement element and the motor generator,
And the frictional engagement element is released during the regenerative braking. 모터 제너레이터와 구동륜 사이에 설치한 무단 변속기와,
상기 모터 제너레이터의 회전이 전달되어 구동하는 오일 펌프를 구비하고,
상기 오일 펌프로부터 토출되는 오일이 압력 조절되어 발생하는 유압을 상기 무단 변속기에 공급하는 차량을 제어하는 차량의 제어 방법이며,
운전자로부터의 감속 요구에 기초하여 상기 모터 제너레이터에서 회생 제동을 행하는 경우, 상기 회생 제동 중에 상기 무단 변속기에 입력되는 입력 토크를 전달하는 제1 유압과 상기 회생 제동 중에 상기 무단 변속기를 변속시키는 제2 유압에 기초한 유압을 상기 무단 변속기에 공급하고,
상기 회생 제동 중, 상기 제1 유압은, 상기 무단 변속기에 공급 가능한 유압으로부터 상기 제2 유압을 감산한 유압 이하로 설정되는, 차량의 제어 방법.A continuously variable transmission provided between the motor generator and the drive wheel,
And an oil pump which is driven by rotation of the motor generator,
Wherein the control unit controls the vehicle to supply the hydraulic pressure generated by regulating the pressure of the oil discharged from the oil pump to the continuously variable transmission,
A first hydraulic pressure for transmitting an input torque to be input to the continuously variable transmission during the regenerative braking and a second hydraulic pressure for shifting the continuously variable transmission during the regenerative braking when regenerative braking is performed in the motor generator based on a deceleration request from a driver, To the continuously variable transmission,
Wherein during the regenerative braking, the first hydraulic pressure is set to be equal to or lower than a hydraulic pressure obtained by subtracting the second hydraulic pressure from a hydraulic pressure that can be supplied to the continuously variable transmission.
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